I love this, and would love to work professionally in languages like this.
I saw that last release was in 2020, and took myself in an acquired reaction on the "staleness" of this project.
The thing is just, that projects like these become stable at a point and need no more upgrades – from there it is horisontal features that can happen in libraries.
This is a stark contrast to the Typescript/React ecosystem I am spending my time mostly on these days. Every time something does not work as expected, it is probably beucase some package was updated underneath your feet.